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Q. What is compound?
A compound is a substance which consists of two or more elements chemically combined. The elements in a compound aren't simply mingled together as they are in a mixture. In its place they are combined in a way such that the compound has properties that are different from those of the elements of which it is composed. Every compound is represented by a formula a combination of the symbols of the elements that make up the compounds. You may already recognize some chemical formulas such as H2O for water, NaCl for table salt and NH3 for ammonia.
Natural rubber - Types of Rubber It is acquired as latex from rubber trees. The latex is coagulated along with formic acid or acetic acid. The coagulated volume is after that s
The maximum number of electrons that can be accommodated in a 3d subshell is: (1) 2 (2) 10 (3) 6 (4) 14 Ans: 10
Optical glass: They contain phosphorous as replacement for most of all the silica and lead silicate, containing a little CaO 2 , the latter is capable of absorbing ultraviolet lig
Sources of antioxidants The primary biological role of antioxidant is in preventing the damage that reactive free radical can cause to cells and cellular compounds. In fact, al
maximum no of unpaired electrons a)mn2+ b)ti3+ c)v3+ d)fe2+
For a hydrogen atom, calculate the wavelength (in nm) of an emitted photon in the Lyman series that results from the transition n = 3 to n = 1
Methylated spirits burner A easy burner can be made from an old boot polish tin. Though it is not necessary, a metal tube can be soldered to the top and a twisted piece of wire
Although cholrine is electron withdrawing group.yet it is ortho nd para directing in electrophilic aromatic substitution reactants.why? Solution) Halogens are an exception of th
Explain Cyclobutane Cyclobutane undergoes an interconversion of puckered forms analogous to the chair interconversion of cyclohexane. This interchanges axial and equatorial gr
how to calculate equivalent weight of phenol
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